98271

Appears in sequences

• a(n) = 3*(2^n-1) - 2*n.at n=15A050488
• Expansion of (1-x)^(-1)/(1 - x - 2*x^2 + 2*x^3).at n=28A077866
• a(n) = 6*2^n - 2*n - 5.at n=14A142964
• Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^14 = I.at n=16A167104
• a(n) is the number of free convex polyominoes of n cells.at n=14A359661